Do you have an email I could use to correspond with the owner about bringing a group of 15-20 women for a private tea lunch in your back room?

I would call the shop and ask! They do take reservations.

I would call. They do have a back room for private parties. The also have a special menu for High Tea.,,

There is no email address on their website, I just checked. You can only call them! Their phone number is on their website.